Rinnai CNTRLDRCINW Operation And Installation Manual page 27

Delete the time scale in one day
When in a weekly timer setting press confirm. Press the up or down
button to select the day of the week and confirm.
Press the up or down button to select the setting time to be deleted.
The setting time, mode and fan speed will appear on the LCD, and can
be deleted by pressing the DELETE button.
eg: Deleting the time on Sat
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